Oklahomans who bought an electric vehicle last year should go ahead and claim the state’s tax credit when filling out their tax returns even though the provision’s fate is tied up in court, a House panel was told Tuesday. Tony Mastin, administrator of the Oklahoma Tax Commission, said a court ruling on the status of the tax credit won’t be made before the April 15 income tax filing deadline. If the credit is determined not to be applicable, the taxpayer could appeal to the Tax Commission and to the Supreme Court, Mastin said. Craig Riffel, an attorney who represents an electric car dealer, said that would be a long and costly process for a credit of about $7,500. The tax credit is for half the purchase price of an electric-powered vehicle and can be combined with federal incentives offered in 2009, resulting in little cost to the buyer. The federal incentive was reduced Dec. 31. Greg Conrady of GKU Electric Vehicles told the House Administrative Rules and Agency Oversight Committee that the low-speed electric vehicles were popular last year, but business slowed after the Tax Commission said in September it would exclude certain models. "I was selling 70 to 80 cars a day,” he said. Conrady said he ordered about 3,000 cars, but has only sold about 1,000 of them. The other buyers either canceled their orders after the Tax Commission’s ruling or are uncertain whether to go ahead with the purchase. A dealer sued the Tax Commission after the agency said the law doesn’t apply to vehicles known as "golf carts,” "go-carts” or vehicles made for off-road use. A Garfield County judge ruled in October that any Oklahoma taxpayer who bought an electric vehicle is eligible for the credits. The state Supreme Court in December said the court lacked jurisdiction. Another suit was filed in Oklahoma County District Court. It’s estimated the credits would cost the state about $40 million. Legislation has been filed to eliminate the tax credit, which is scheduled to remain in effect through at least 2014.